All things considered, knowing what is in your opponents hand is very useful information, however, the real value lies in your ability to take away their best creature, and turn it into Valki later
While some Pokemon players and collectors feel that Battle Styles has a bit too many full arts, rainbow rares, and golden trainers, nobody can deny the beauty and intricate details of the alternate art cards
(1) If a Salamangreat Link Monster you control leaves the field due to an opponents card effect and this card is in your GY: You can Special Summon 2 Level 4 Salamangreat monsters from your GY, including this card, and if you do, immediately after this effect resolves, Xyz Summon 1 Salamangreat Xyz Monster using these 2 monsters only
However, card recycling, which is a survivor's specialty, relies on specific cards, and it is not always a good idea to only be able to use one such important card at a time